Outdoor production of microalgae
Summer outdoor tests were successfully concluded by WP2 partners and the first set of data for Life Cycle Analysis (LCA) analysis collected. Input/output data of starvation and limitation tests performed were presented during the last GA meeting in Wageningen (November 2014). Currently a method for the extrapolation of data input parameter obtained in small pilots to a scaled-up plant to be used for the LCA analysis is under development. This will harmonize the data collected by the individual partners and facilitate the next LCA phase.
Fotosintetica & Microbiologicaplant in Florence (Italy)
Concerning F&M activity, outdoor tests just started again. New set of input/output data will be collected and used as representative of the Spring season in Florence. Based on results of the previous cultivation campaign, protocols for nitrogen starvation and limitation experiments are being adjusted both for NannochloropsisandPhaeodactylum.
AlgaePARC, Wageningen UR (Netherlands)
At AlgaePARC in Wageningen, NL, winter is over and the systems have been prepared for the new growth season. The reactors were inoculated in April.
The first outdoor cultivations will be batches that mimic the cultivations already performed indoor. This will create a clear picture of the differences between indoor and outdoor cultivation, and will also allow us to detect possible bottlenecks of the newly constructed reactors.
Next, to explore the possibilities and limitations of continuous biomass production, an innovative approach will be used to exert a well-defined degree of nitrogen limitation. The accurate control of nitrogen supply allows to optimize the oil yield on sunlight, and compare the novel approach with other conventional systems.
Ben GurionUniversity (Israel)
BGU has cultivated Nannochloropsis and Phaeodactylum in parallel during winter, recording productivity, resource input, and light exploitation respective to reactor outlay.
Panels have been oriented facing south in a distance permitting highest light utilization during winter. Spacing distances of 1.4 m can be applied between October and February allowing about 50 l/m2 of cultivation volume. Between March and September spacing of 75 cm can be applied allowing cultivation volumes of 100 l/m2.
In those panels productivities of the two species are rather similar, about 0.2 gl-1day-1. Because of the high cooling cost and low productivity we have investigated alternative technologies allowing better light exploitation under lower energy input for cooling, that have yielded highly promising initial results.
Biotopicplant at Huelva (Spain)
At Biotopic, a flat panel demonstration plant was installed in January 2015 in Huelva, Spain.
The installation consists of 20 ProviApt reactors, each containing 35 panels of 0,5 m2, i.e. a total panel area of 350 m2. The fooprint of the entire installation is 290 m2 .
Phaeodactylum tricornutum is being propagated for inoculation of the plant.